Gameshow Marathon was a British game show, broadcast on ITV from 17 September 2005 to 26 May 2007. After a quick retrospective look at the history of the particular show, the show itself is recreated. This involved recreating the original set and using original opening programme titles, including the appropriate producer ident. All participants are celebrities, and any prizes won go into a "Viewer Prize Mountain" which is awarded to a viewer via a phone-in competition.

14th July 2005 - 24th September 2005